Hate nausea

I’m around 8 weeks pregnant. Nausea has been horrible. I don’t get sick every day but when I do it’s once in the morning. I am ALWAYS nauseous though, and to make it worse the ONLY thing that helps me feel great is pop.. like why?? I just don’t want to intake too much caffeine. I’ve been doing great with limiting 1 per day at night but I’m scared even that much is too much. Water makes me more nauseous too.. and if I wasn’t worried I would drink it slowly all day just to help with the nausea.. but I make myself suffer until night.